"Science" rumor list in June 2022: Children will be acne?Will it become cold this summer?

The list of "Science" rumors in June 2022 was announced! Children with chickenpox? Is the body twitching a sudden death signal in sleep? Will the validity of the new crown vaccine change negative after 4 months? Look at the truth.

The monthly "Science" rumor list is guided by the Beijing Science and Technology Association, the Beijing Municipal Party Committee's Internet Information Office, the Capital Internet Association, and the Beijing Science and Technology Reporter Editor Association and the Beijing area website joint rumor platform. The support of the committee of the committee, the Chinese Evening News Editorial Society, the Shanghai Science and Technology Communication Association, and the Institute of Science and Technology Intelligence Research Institute of the Institute of Science and Technology of Science and Technology.

1. Chickenpox is a disease that children can get

gossip:

Chickenpox is very contagious and is a disease that children can get. After adulthood, people will not get chickenpox anymore.

(Picture source: Vision China)

the truth:

Although chickenpox occurs in children aged 2-10, it is not a child's "patent", and adults will also have chickenpox. If you do not leave the treatment in time, it is easy for other members of the family to suffer.

The chickenpox we often say refers to acute infectious diseases caused by the first infection of chickenpox-shingles virus. After chickenpox, you can get lifelong immunity, and the chance of infection is very small, which causes the impression that "adults must not have chickenpox." In fact, people who have never had chickenpox and have not been vaccinated with chickenpox vaccines are highly susceptible to chickenpox, and adults are no exception.

In addition, after the chickenpox healed, the virus did not disappear, but lurked in the back root ganglia after the spinal cord. When the human body's immune function is weakened, the chickenpox may be activated again, and the surrounding nerves can be moved, which affects the skin along the peripheral nerve and produces shingles. The patient's rash contains high concentration of chickenpox-shingles virus, and directly contacting the vesic liquid can cause chickenpox to suffer from chickenpox.

Adults infection with chickenpox are often severe than children's infection. They are diverse and scattered nodular pneumonia. The mortality rate is as high as 10%to 40%. Therefore, adults should also pay attention to preventing chickenpox.

2. The pungent odor that enlightened after opening the bag is formaldehyde

gossip:

After opening the bag, the enoki mushrooms smell the pungent odor because the merchant uses formaldehyde to "bleach" it. It not only hurts the liver and kidney after eating, but also causes cancer.

(Picture source: Vision China)

the truth:

It may smell a pungent smell when disassembling the enoki mushroom packaging bag. This is not because of the added formaldehyde, but because the temperature changes during the transportation process, which causes the enoki mushrooms Some volatile aldehyde gases.

The original enoki mushrooms were indeed yellow. The reason why it was "turned white" was not the result of bleaching with formaldehyde. Nowadays, most of the enoki mushrooms on the market are new varieties from Japan. Researchers have found the white enoki mushrooms of gene mutations in the yellow enoki mushrooms, and then retain them for cultivation. This kinds of enoki mushrooms are not only good in color, but also grow fast and neat.

my country's "Food Safety Law" and "Agricultural Product Quality and Safety Law" clearly stipulate that formaldehyde must not be used as food processing aid for production and operation.

3. The body suddenly twitched in the sleep is a sudden death signal

gossip:

When I was about to fall asleep, I suddenly shake the whole body. This is a signal that the brain "strike" causes the body to lose control and is a signal of sudden death.

(Picture source: Vision China)

the truth:

The phenomenon of sudden shaking of the body when sleeping is called "Sleep Stealing", also known as "falling asleep and twitching" or "sleeping myoclonus". This phenomenon is more common, not a signal of "sudden death".

When people were asleep, part of the brain had fallen asleep, but some of them had not completely fell asleep. With the deepening of sleep, the brain relaxes the control of the limbs. When the brain is stimulated by certain information inside and outside the body, the physical muscles may suddenly twitch. This is sleep. According to reports, about 60%-70%have had such personal experience.

4. The more toxic the mosquito bag, the stronger the more toxicity

gossip:

After being bitten by a mosquito, the size of the swollen bag can see the strength of the mosquito toxicity. The greater the mosquito bag, the stronger the toxicity.

(Picture source: Vision China)

the truth:

After being bitten by a mosquito, the mosquito wrapped in the body is closely related to the personal immune system mechanism, which has nothing to do with "mosquito toxicity".

The process of humans' response to mosquito bites is a perverted process. There are four types of human perverted reactions: type I perverted reactions, also known as fast hairstyle perverted reactions, are relatively rapid, and the human body's response is relatively severe. Common penicillin allergic reactions, drug rashes caused by drugs, allergic gastroenteritis caused by foods, foods caused by food , Asthma onset, allergic shock, etc. Type II perverted reactions, also known as cytotoxic metamorphosis, such as blood -inferior blood transfusion reactions. Type III perverted reactions, also known as perverted reactions of immune composite models, such as some glomerular nephritis infection after linking of Chainobacteriae, etc. Type IV metamorphosis, also known as delayed perverted reactions. The first contact will not cause a reaction. After the antigen is exposed again, it will cause the reaction. For example, the rejection of organ transplantation, certain autoimmune diseases, etc.

The reaction of mosquito bites is generally divided into local reactions and systemic reactions. The typical reaction is a local reaction: the wind ball rash usually appears immediately with redness and itching, and the performance is the most obvious when the bite is 20 minutes.

Local response generally has the following characteristics: people who have never been exposed to a certain mosquito will not respond to the first bite of such mosquitoes, and subsequent bites will cause delayed local skin reactions. group. Therefore, people who have never been exposed to a certain mosquito will not respond to the first bite of such mosquitoes, but when they are bitten again, they will immediately produce wind balls. This kind of local reaction belongs to the type I perverted reaction (also known as the speed hairstyle perverted response). However, those who are repeatedly bite by the same mosquito will eventually disappear. Therefore, the local response of adults was bitten by mosquitoes is not as severe as children, because adults are "bite" by mosquitoes.

5. Injecting the new crown vaccine after 4 months of effectiveness will become negative numbers

gossip:

Recently, some articles on the Internet claims that some studies have shown that the effectiveness of the new crown vaccine has become negative in just a few months, which means that it is more likely to be infected with vaccines.

(Picture source: Vision China)

the truth:

According to the original research, the effectiveness of the vaccine will decline over time, but the decline in effectiveness in the study is for mildness. In addition to mild disease, the vaccine still has a good prevention of severe disease, reducing the risk of hospitalization, and reducing the risk of death. Seeing the decreased effectiveness of protective protection, it is said that the vaccine failure is biased.

The effectiveness of the vaccine is negative does not mean that the vaccine is opposite (increasing the risk of infection), and the negative number is caused by the potential deviation factors in the data statistics process. The so -called "vaccine effectiveness becomes negative". Evidence shows that vaccines can effectively reduce the risk of symptomatic infection, which is consistent with the meaning of zero validity.

The effectiveness of the vaccine is multi -level. Even if the effectiveness of the anti -infection decreases, the new crown vaccine still provides very critical anti -severe effect.

6. Cold vortex will only bring bad weather

gossip:

Cold vortex is synonymous with bad news. Its appearance means strong convection weather such as hail, thunderstorms, wind, and short -term heavy precipitation.

(Picture source: Vision China)

the truth:

Cold vortex is also called "high -altitude cold vortex" in meteorology. After the formation of the cold vortex system, the temperature of the high altitude becomes cold, which increases the unstable conditions of the atmospheric environment. disaster. But cold vortex weather does not necessarily bring rainfall, which depends on the cooperation of low -level weather systems.

For example, after the cold vortex from Inner Mongolia and the Northeast region to the North China Plain, if the low -level atmosphere is accompanied by a strong vortex system, the height is matched to meet the weather conditions caused by the rainstorm, and it is also related to the latent heat generated by precipitation.

If there is not enough precipitation conditions, the cold vortex will bring people a refreshing cool breeze. It can dispel heat in summer, and in autumn, it is good at creating the "high value" weather of blue sky and white clouds. In the intersection of summer and autumn in Beijing, the high altitude is greatly affected by the cold vortex of the Northeast, and the transparency of the atmosphere is very high. At the same time, the ground is still mainly blowing the southern wind, which will bring sufficient water vapor from the ocean. Such a favorable water vapor condition, coupled with the radiation heating effect of the summer afternoon, is easy to form a convection, forming a good weather with blue sky and white clouds, autumn high air.

7. Due to the "distance phenomenon", this summer will become cold

gossip:

From May 22 this year, the sun will stay away from the earth and reach the "far away". During this period, the weather will become relatively cold and will continue until August this year.

(Picture source: Vision China)

the truth:

The earth's orbit does have near and long days, but the distance between the two is not much different, and the "far away" will not cause summer cold.

The place closest to the sun is called "recently". At this time, the earth is about 147.1 billion kilometers away from the sun. The place is the farthest from the sun on the orbit, which is about 152.1 billion kilometers away. Every January, the Earth will reach the recent point, and it will reach a long -distance point in July -although the difference between two points is 5 million kilometers, but if compared with the average distance from the earth to the sun, it seems insignificant. It is found that this difference only accounts for 3.3%of the average daily distance, which is like the difference between 100 meters and 103.3 meters, and it can be ignored. In fact, the solar radiation received by the earth was only less than 6%stronger than far away.

Because the earth is a "ball" with an inclined angle, in different months of each year, the angle received by the sun received in a specific area is different, so the energy is also different. Therefore, when the earth is turning around the sun, it presents cyclical four seasons, and has a greater relationship with the sun.

8. The disposable gloves worn when eating crayfish are useless

gossip:

When eating crayfish and other foods, people wear disposable plastic gloves. But after eating, the hand is still full of red oil, which shows that this plastic glove is completely useless.

(Picture source: Vision China)

the truth:

When contacting food, the maximum role of wearing disposable gloves is not oil -proof, but to block bacteria. The disposable gloves made of polyethylene materials have the effect of blocking bacteria. Wearing it when eating crayfish can effectively prevent the bacteria on the hands from entering the human body, thereby achieving the purpose of a healthy diet.

The polyethylene used for disposable gloves, the raw materials are mainly low -density polyethylene (LDPE) and linear low -density polyethylene (LLDPE).According to the principle of "similarly dissolved", when exposed to oil, low -density polyethylene and linear low -density polyethylene may develop a certain degree of bloating, causing the fat molecules to pass through one -time gloves from the gaps of our naked eye.Therefore, it is difficult to completely block the greasy even if wearing disposable gloves.It is worth noting that when using disposable gloves, try to buy products produced by regular manufacturers.Performance of disposable gloves may be greatly reduced, and it may also contain harmful substances.

(Source of this issue: People's Daily, China Science Popularization Network, Science and Technology Daily WeChat public account, Science Popularization China, Jiangsu News, Beijing Science and Technology News, Shanghai Health and Health Commission, Tencent is true, Chutian Metropolis Daily)

Produced: Popular Science Central Kitchen

Producer: Beijing Science and Technology News | Beike Media

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